Cube for the Yugioh quest Have You Tried Dueling It Away? on SpaceBattles. This quest uses custom cards, so I've added token cards to the cube which represent the custom cards. You'll have to match the specific token cards to the custom card they correlate with below. I've put the tokens in alphabetical order so they're a little easier to find.

If playing the cube, it's best set to 4 players with pack size of either 6 or 12, and a draft size of 48 cards per player. Each player receives 2 copies of Polymerization and 1 copy each of Goddess of Whim, Cosmo Queen and Prevent Rat automatically, then the cube is divided up so that each player receives an equal number additional random cards from the cube pool. Each player who pulled a Ritual Monster from the cube pool automatically receives its associated Ritual Spell card, as listed below. Decks are then constructed with a minimum size limit of 30 cards, and each player can have a single copy of any of the listed Extra Deck monsters below to build their Extra Deck from, with the regular 15 card maximum limit.  

RITUAL SPELL CARDS

Ruin, Angel of Oblivion - Cycle of the World
Ruin, Queen of Oblivion - End of the World
Crab Turtle - Turtle Oath
Garlandolf, King of Destruction - Ritual of Destruction
Saffira, Queen of Dragons - Hymn of Light
Sauravis, the Ancient and Ascended - Sprite's Blessing* (A copy of this card is in the cube because it can be used for several other Ritual monsters, but the player who pulls Sauravis automatically receives a copy as well)
Transonic Bird - Sonic Tracker
Vennu, Bright Bird of Divinity - Primal Cry
Zera the Mant - Zera Ritual

ALTERED EFFECTS

Obelisk the Tormenter – [Divine/Divine-Beast/Level 10 - ATK/ 4000 DEF/ 4000 - You must Tribute 3 monsters to Normal Summon this card in face-up Attack Position or face-up Defense Position (you cannot Set this card). This card's Normal Summon cannot be negated. Cannot be targeted or destroyed by card effects, except by DIVINE cards' effects. Cannot be controlled, flipped, returned to the hand, or Tributed by your opponent. Traps cannot be activated in response to this card's attack. If this card is banished and Special Summoned, or Special Summoned from the GY: return it during the End Phase. If this card is affected by another cards' effect, during the End Phase: destroy that card. You can Tribute 2 monsters; destroy all monsters your opponent controls.]

Slifer the Sky Dragon – [Divine/Divine-Beast/Level 10 - ATK/ X000 DEF/ X000 - You must Tribute 3 monsters to Normal Summon this card in face-up Attack Position or face-up Defense Position (you cannot Set this card). This card's Normal Summon cannot be negated. Cannot be targeted or destroyed by card effects, except by DIVINE cards' effects. Cannot be controlled, flipped, returned to the hand, or Tributed by your opponent. Traps cannot be activated in response to this card's attack. If this card is banished and Special Summoned, or Special Summoned from the GY: return it during the End Phase. If this card is affected by another cards' effect, during the End Phase: destroy that card. Gains 1000 ATK/DEF for each card in your hand. If a monster(s) is Normal or Special Summoned to your opponent's field: That monster(s) loses 2000 ATK and/or DEF (based on its battle position), then if its ATK and/or DEF is 0, destroy it.]

The Winged Dragon of Ra – [Divine/Divine-Beast/Level 10 - ATK/ ???? DEF/ ???? - You must Tribute 3 monsters to Normal Summon this card in face-up Attack Position or face-up Defense Position (you cannot Set this card). This card's original ATK/DEF becomes the combined original ATK/DEF of the Tributed monsters. This card's Normal Summon cannot be negated. Cannot be targeted or destroyed by card effects. Cannot be controlled, flipped, returned to the hand, or Tributed by your opponent. Traps cannot be activated in response to this card's attack. If this card is banished and Special Summoned, or Special Summoned from the GY: return it during the End Phase. If this card is affected by another cards' effect, during the End Phase: destroy that card. You can Tribute any amount of monsters you control, or pay any amount of LP, increase this card's ATK/DEF by the ATK/DEF of the Tributed monsters and/or the amount of LP you paid, and if you do, only this monster you control can attack this turn, and it can attack every monster your opponent controls; this turn, negate the effects of all monsters destroyed in battle with this card. (Quick-Effect): You can pay 1000 LP: Until the End Phase; this card's ATK/DEF become 0, it cannot be destroyed by battle; you take no battle damage if this card battles; destroy any monster this card battles.]

EXTRA DECK MONSTERS

Chimeratech Overdragon - Official Release
Darkfire Dragon - Official Release
Fiend Skull Dragon - Official Release
First of the Dragons - Official Release
Five-Headed Dragon - Official Release
Magnum the Reliever - Official Release
Metal Dragon - Official Release
Mysterion the Dragon Crown - Official Release
Sanwitch - Official Release
Skull Knight - Official Release

Anubis, the Usurper King – [Dark/Fiend/Level 9 - ATK/ 3200 DEF/ 0 - "The End of Anubis" + "Time Wizard"
Must either be Fusion Summoned, or Special Summoned (from the Extra Deck) by sending 1 "The End of Anubis" you control to the GY, immediately after resolving the effect of "Time Wizard". Negate all other card effects which would move a card(s) in the GY to another location. Your opponent cannot activate card effects in the GY. When this card destroys an opponent's monster by battle and sends it to the GY: You can Special Summon that monster to your field in Defense Position, but it has its effects negated. If this card leaves the field by your opponent; Special Summon 1 "The End of Anubis" from your GY.]

Borreload Furious Dragon – [Dark/Dragon/Level 8 - ATK/ 3000 DEF/ 2500 - 2 DARK Dragon monsters
(Quick Effect): You can target 1 monster you control and 1 card your opponent controls; destroy them. You can banish this card from your GY, then target 1 DARK Fusion Monster in your GY; Special Summon it, but it cannot activate its effects this turn. You can only one effect of "Borreload Furious Dragon" per turn, and only once that turn.]

Chaos Command Dragoon – [Light/Spellcaster/Level 8 - ATK/ 3000 DEF/ 2400 - "Chaos Command Magician" + 1 Dragon monster
A Fusion Summon of this monster can only be conducted with the above Fusion Material Monsters. Can also be Special Summoned by sending the above monsters you control to the GY, or banishing 1 "Chaos Command Magician" you control and 1 Dragon monster from your hand. Unaffected by monster effects. Once per turn, if this card destroys an opponent's monster by battle and sends it to the GY: You can banish 1 DARK or LIGHT monster from your GY, this card can make a second attack on a monster this turn. If this card was Summoned using a DARK Dragon monster:
• If this card attacks a Defense Position monster, inflict piercing battle damage.]

Chrona, the Ancient & Ascended – [Light/Spellcaster/Level 10 - ATK/ 3900 DEF/ 3450 - 1 "Cosmo", "Whim", or "Time Wizard" Fusion monster + 1+ "Cosmo", "Whim", or "Time Wizard" monsters.
Must be Fusion Summoned. This card can attack monsters a number of times each Battle Phase, up to the number of materials used for its Fusion Summon. If this card attacks, it is unaffected by other card effects until the end of the Damage Step. Once per chain, when a card or effect is activated: You can shuffle one of your banished cards into your deck; Negate that effect, and if you do, banish that card.]

Cosmo Fairy Dragon – [Light/Dragon/Level 6 - ATK/ 2300 DEF/ 2400 - "Fairy Dragon" + "Time Wizard"
Can also be Special Summoned (from your Extra Deck) by sending 1 "Fairy Dragon" you control to the GY, immediately after resolving the effect of "Time Wizard".]

Cosmo Goddess – [Dark/Spellcaster/Level 9 - ATK/ 3300 DEF/ 3000 - "Cosmo Queen" + "Goddess of Whim"
Once per turn, this face-up card is unaffected by other cards' effects. Once per turn, you can target 1 other monster on the field and toss a coin: if the result is Heads: Double its ATK until the End Phase; if the result is Tails: Halve its ATK until the End Phase.]

Cosmo Heiress – [Light/Spellcaster/Level 5 - ATK/ 2150 DEF/ 2350 - "Cosmo Princess" + 1 "Cosmo" monster
You can also Fusion Summon this card by sending the above cards you control to the GY (in which case, you do not use "Polymerization"). If this card is Fusion Summoned: You can target monster(s) you control or in your GY, up to the number of different original Attributes used for the Fusion Summon of this card; place them at the bottom of your deck, then draw card(s) equal to the number of card(s) returned to your Main Deck by this effect.]

Dragon Goddess of Whim – [Light/Fairy/Level 7 - ATK/ 1250 DEF/ 2000 - "Goddess of Whim" + 1 Dragon monster
Once per turn, during either player's Main Phase: You can banish 1 Dragon-type monster from your hand or GY, and if you do; double this card's ATK until the End Phase. Once per turn, when a Spell or Trap effect is activated (Quick-Effect): You can halve this card's ATK/DEF until the End Phase; negate that effect.]

Goddess of Spacetime – Chrona – [Light/Spellcaster/Level 10 - ATK/ 3900 DEF/ 3450 - "Goddess of Whim" + "Cosmo Queen" + "Time Wizard"
You can also Fusion Summon this card by using any 1 Fusion monster which lists two of the above three monsters as material in place of those two monsters. Must either be Fusion Summoned, or Special Summoned (from your Extra Deck) by banishing 1 "Cosmo Goddess" and 1 "Time Wizard" you control, immediately after resolving the effect of "Time Wizard". This card's summon and effects cannot be negated. Cannot be destroyed by your opponent's card effects. Once per turn (Quick Effect): If a card or effect is activated, you can negate the activation, and if you do, banish that card.]

Iron Queen of the Abyss – [Dark/Fairy/Level 7 - ATK/ 2500 DEF/ 2150 -"Goddess of Whim" + 1 Fiend monster
Once per turn, you can toss a coin and call heads or tails. If you call it right, add 1 monster from your GY to your hand. If you call it wrong, banish 1 monster from your GY. (This card is always treated as a "Whim" card.)]

Risen King of the Abyss – [Dark/Fiend/Level 5 - ATK/ 2200 DEF/ 1700 - "Dark King of the Abyss" + "Time Wizard"
This card can also be Special Summoned (from the Extra Deck) by sending 1 "Dark King of the Abyss" you control to the GY, immediately after resolving the effect of "Time Wizard". Cannot be destroyed by battle by Fiend-type monsters.]

Temporal Cosmo Empress – [Dark/Spellcaster/Level 9 - ATK/ 3100 DEF/ 3400 - "Cosmo Queen" + "Time Wizard"
This card can also be Special Summoned (from your Extra Deck) by sending 1 "Cosmo Queen" you control to the GY, immediately after resolving the effect of "Time Wizard". When Summoned this way: add 1 Spell card from the GY to your hand.]

Temporal Goddess of Whim – [Light/Fairy/Level 7 - ATK/ 2400 DEF/ 2200 -"Goddess of Whim" + "Time Wizard"
This card can also be Special Summoned (from your Extra Deck) by sending the above monsters you control to the GY, immediately after resolving the effect of "Time Wizard". Once per turn: you can target 1 other monster on the field and toss a coin twice, then select one result: If the result is Heads, increase its ATK by its level x 100 until the End Phase of the next turn; if the result is Tails, decrease its ATK by its level x 100 until the End Phase of the next turn.]

Whimsical Dragonwitch – [Light/Spellcaster/Level 8 - ATK/ 3000 DEF/ 2750 - "Cosmo Dragonwitch" + "Goddess of Whim"
A Fusion Summon of this card can only be done with the above Fusion Material Monsters. If this card is Summoned: You can Special Summon 1 Dragon monster from your hand or GY. While this card is face-up on the field, Dragon monsters you control cannot be targeted or destroyed by your opponent's card effects.]

Whimsical Iron Queen – [Dark/Fairy/Level 7 - ATK/ 2500 DEF/ 2150 – 1 "Whim" monster + 1 DARK and/or Fiend monster
Once per turn: You can roll a six-sided die, then apply the following effect based on the result:
• 1, 2, or 3: Banish up to 3 card(s) in either GY.
• 4 or 5: Add 1 "Polymerization" and 1 monster with a Level that is less than or equal to the number you rolled from your GY to your hand.
• 6: Destroy face-up cards your opponent controls, up to the number of your banished "Whim" monsters.]

CUSTOM MONSTER CARDS

Cosmo Titan (Ancient Gear Token) – [Light/Warrior/Level 7 - ATK/ 2300 DEF/ 1800 - An invasion weapon controlled by five rings. When it arrives, it crushes entire civilizations underfoot. Dyugyaai Bu Zuwaai!]

Cosmo Witch (Army Ant Token) – [Light/Spellcaster/Level 4 - ATK/ 1900 DEF/ 1450 – Formerly a nature spirit, this young mage seeks wisdom in the vast wonders of the cosmos.]

Champion of Whim (Asmo Token) – [Dark/Fairy/Level 6 - ATK/ 2150 DEF/2500 – If you control a "Whim" monster, except "Champion of Whim", you can Special Summon this card from your hand or GY. You can only Special Summon "Champion of Whim" once per turn this way. You can tribute this card you control; add 1 "Polymerization" from your deck or GY to your hand, also you cannot Fusion Summon monsters from your Extra Deck this turn, except by using at least 1 "Whim" monster as material. If a "Whim" monster, or a Fusion monster that was Summoned using a "Whim" monster as material would be destroyed by battle or card effect, you can banish this card from your GY instead. You can only use each effect of "Champion of Whim" once per turn.]

Cosmo Duchess (Batteryman Token) – [Light/Spellcaster/Level 8 - ATK/ 2450 DEF/ 2900 - This card's name is treated as "Cosmo Queen" while on the field or in the GY. You can Special Summon this card by Tributing any 1 "Cosmo" monster you control. Once per turn (Quick-Effect): You can banish 1 set Spell/Trap card on the field. If this card is sent from the field to the GY: Add 1 "Cosmo Queen" from your deck or GY to your hand, other than this card.]

Cosmo Lightspeed Dragon (Battle Eagle Token) – [Light/Dragon/Level 5 - ATK/ 2300 DEF/ 2100 - You can Normal Summon this card without Tributing. If this card is Normal Summoned without Tributing, its original ATK becomes 1800. If this card is Tributed: You can add 1 "Cosmo" monster or 1 Spell or Trap card which lists "Cosmo" in its text from your deck to your hand. You can only use this effect of "Cosmo Lightspeed Dragon" once per turn.]

Cosmo Queensguard (Black Sheep Token) – [Dark/Warrior/Level 6 - ATK/ 1500 DEF/ 2500 - When an opponent's monster targets 1 "Cosmo Queen" or "Cosmo Princess" you control for an attack: You can target the attacking monster, negate the attack, and if you do, Special Summon this card from your hand. "Cosmo Queen" and "Cosmo Princess" you control cannot be destroyed by battle or card effects while this card is face-up on the field. This card can attack while it is in Defense Position. If this card attacks while in Defense Position, apply the ATK of this card for damage calculation. When this card is destroyed and sent to the GY: Special Summon 1 "Cosmo Knight" from your hand, deck, or GY.]

Angel of Whim (Blackwing - Black Crest Token) – [Light/Fiend/Level 3 - ATK/ 700 DEF/ 950 - This card's name always is treated as "Goddess of Whim". When this card is Summoned, you can add 1 card that lists the word "coin" in its text from your GY to your hand.]

Cosmo Crusader (Block Token) – [Light/Warrior/Level 4 - ATK/2100 DEF/800 - You can discard this card to the Graveyard; add 1 "Royal Fortress in the Cosmos" from your Deck to your hand. If "Royal Fortress in the Cosmos" is not face-up on the field, destroy this card.]

Cosmo Dragonwitch (Ceremonial Token) – [Dark/Spellcaster/Level 4- ATK/ 1700 DEF/ 1600 - Once per turn: You can discard 1 card, add 1 Dragon monster from your deck to your hand. Once per turn, during either player's damage step: you can banish 1 Dragon monster from your GY; increase this card's ATK by that monster's level x 100 until the End Phase.]

Cosmo Knight (Chewbone Jr. Token) – [Dark/Warrior/Level 4 - ATK/ 1600 DEF/2100 - Your opponent cannot select another face-up "Cosmo" monster on the field as an attack target, or target them with card effects.]

Cosmo Princess (Clone Token) – [Light/Spellcaster/Level 3 - ATK/ 1350 DEF/ 1550 - If this card is Summoned: You can add 1 "Cosmo" monster from your deck to your hand. If this card is destroyed and sent to the GY: You can add 1 Spell or Trap card, which lists "Cosmo" in its text, from your GY to your hand.]

Cosmo Warlock (Cloudian Token) – [Light/Spellcaster/Level 4- ATK/ 1800 DEF/ 1500 - If you control a Dragon monster, you can Special Summon this card (from your hand), but it cannot attack this turn. Once per turn: You can Tribute 1 monster, add 1 "Polymerization" from your deck to your hand.]

Dragon Wandering the Cosmos (Compass Token) – [Dark/Dragon/Level 4 - ATK/ 1300 DEF/ 2000 - If you control a "Cosmo" monster, you can Special Summon this card (from your hand). If Special Summoned this way, this monster cannot be offered as Tribute for a Tribute Summon until your next turn.]

Handmaiden of Whim (Crystron Token) – [Light/Fiend/Level 3 - ATK/ 1000 DEF/ 600 – When this card is Normal Summoned: You can Special Summon 1 "Whim" monster from your hand or deck, but negate its effects. You can banish this card you control; Fusion Summon 1 Fusion monster from your Extra Deck, by shuffling the Fusion Materials listed on it into the Deck from among your cards that are banished and/or in your GY, including 1 "Whim" monster, except "Handmaiden of Whim". You can only use each effect of "Handmaiden of Whim" once per turn.]

Lady of the Stars (DOG Fighter Token) – [Light/Fairy/Level 2 - ATK/ 0 DEF/ 0 - (This card is always treated as a "Cosmo" card.) If this card is in your hand: You can reveal 1 Fusion Monster from your Extra Deck, then banish 1 of the Fusion Materials whose name is specifically listed on that card from your Deck; Special Summon this card from your hand, and if you do, this card's name becomes the banished monster's until the End Phase. You cannot Special Summon monsters from the Extra Deck, other than the revealed card, the turn you activate this effect.]

Skilled Cosmo Witch (Dark Soul Token) – [Dark/Spellcaster/Level 4 - ATK/ 1750 DEF/ 1850 - Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell resolves (max. 3). You can Tribute this card with 3 Spell Counters on it; Special Summon 1 "Cosmo Queen" from your hand, Deck, or GY.]

Whimsical Goddess – Persephone (Data Acorn Token) – [Light/Fairy/Level 4 - ATK/ 1900 DEF/ 1400 - This card's name is always treated as "Goddess of Whim". Once per turn, you can flip a coin, then roll a six-sided die. Heads: Target 1 monster; increase its ATK by the result x 100. Tails: Target 1 monster; decrease its ATK by the result x 100. This effect lasts until the End Phase of your opponent's next turn.]

CUSTOM SPELL CARDS

Altar of Chaos (Data Token) – [Ritual/This card can be used to Ritual Summon any LIGHT or DARK Ritual Monster. You must also banish LIGHT and/or DARK monsters from your field or GY whose total Levels exactly equal the Level of the Ritual Monster you Ritual Summon. You can banish this card from your GY; add 1 Ritual Monster or Ritual Spell from your deck or GY to your hand.]

Blessing of Whimsy (Deus Token) – [Quick-Play/When either player tosses a coin(s): Reverse the result of that coin flip.]

Dragonic Flash (Divine Dragon Token) – [Quick-Play/If you control a Spellcaster monster: Pay 500 LP; Special Summon 1 Level 6 or lower Dragon monster from your hand or Extra Deck, but it cannot attack this turn.]

Illusive Darkness (Doomsday Token) – [Field/Increase the ATK/DEF of all face-up Dark-attribute and Fiend-type monsters on the field by 300. You select the targets of your opponent’s attacks.]

Mystic Quasar Burst (Doppel Token) – [Normal/If you control "Cosmo Queen": Destroy all face-up cards your opponent controls. "Cosmo Queen" you control cannot attack or be used as fusion material for a Fusion Summon the turn you activate this card.]

Royal Fortress in the Cosmos (Double Dude Token) x2 – [Field/All "Cosmo" monsters on the field gain 200 ATK/DEF. When a "Cosmo" monster is Summoned, place 1 Spell Counter on this card. If a card you control with any number of Spell Counters is destroyed and sent to the GY, add that amount of Spell Counters to this card. Once per turn, you can remove any number of Spell Counters from this card: Special Summon 1 "Cosmo" monster from your GY, whose total level stars are equal to the number of Spell Counters you removed. When this card is destroyed and sent to the GY: You can shuffle one of your banished "Cosmo" monsters into your deck.]

Sanctum of Whim (Einherjar Token) – [Spell/Continuous – When this card is activated: You can add 1 Fairy or LIGHT Fiend monster from your deck or GY to your hand. "Whim" monsters you control gain 300 ATK/DEF. Once per turn: You can roll a six-sided die, then apply one of the following effects based on the result, until the end of this turn:
• 1, 2, or 3: When 1 of your "Whim" monsters declares an attack, your opponent cannot activate cards or effects until the end of the damage step.
• 4 or 5: All "Whim" monsters you control inflict piercing battle damage.
• 6: If a "Whim" Fusion monster destroys an opponent's monster by battle: Draw 1 card, then place 1 card from your GY on the bottom of your deck.]

Shimmering Starry Sky (Emissary of Darkness Token) – [Quick-Play/Normal Summon 1 monster from your hand, then you can target 1 "Cosmo" card you control that you can place a Spell Counter on, and place 1 Spell Counter on that target. You can banish this card from your GY; activate 1 of the following effects:
• Ritual Summon 1 Ritual Monster, Tributing monster(s) from your hand/field and up to 1 monster from your deck, whose total Level(s) equal the Level of the Ritual Monster.
• Fusion Summon 1 Fusion Monster, using 1 monster you control and 1 monster from your hand/field as Fusion Material.
You can only activate 1 "Shimmering Starry Sky" effect per turn, and only once that turn.]

Time Magic (Engine Token) – [Normal/Send 1 monster you control to the GY; Special Summon 1 Fusion Monster from your Extra Deck that lists only that monster on the field as well as "Time Wizard" as Fusion Material. The monster is treated as having been Special Summoned by its own effect. You can only activate 1 "Time Magic" per turn.]

CUSTOM TRAP CARDS

Cosmic Barrier (EVA Token) – [Normal/When an opponent's monster declares an attack while you control a "Cosmo" monster: Target the attacking monster, destroy that target, then end the Battle Phase.]

Cosmic Supernova (Evil Token) – [Normal/Tribute 1 "Cosmo Queen" you control: Destroy all monsters your opponent controls.]

Oracle of Whim (Fluff Token) – [Trap/Continuous – When a monster effect is activated that targets a "Whim" monster you control: You can roll a six-sided die, then apply the following result:
• 1, 2, or 3: After the effect resolves, shuffle that monster into the deck, then you can banish 1 monster from your GY, add 1 "Whim" monster from the GY to your hand.
• 4 or 5: You can negate the activation, and if you do, destroy that card, and if you do that, send this card to the GY.
• 6: You can negate the activation, and if you do, banish that card.
If a "Whim" monster you control would be destroyed by battle or monster effect, while this card is in your GY: You can Special Summon this card as an Effect Monster (Fairy/LIGHT/Level 3/ATK 0/DEF 0), and if you do, that "Whim" monster is not destroyed. (This card is NOT treated as a Trap, and its name is treated as "Goddess of Whim".) You can only use each effect of "Oracle of Whim" once per turn.]